Dishwashing machine



'May 31, 1927.

l c. L'. vy/ooDwARm` DIsHwAsHING MACHINE Filed March 10'. 1922 ATTORNEY.v

Patented May 31, 1927.

UNITED STATES 1,630,684 PATENT OFFICE.

CHARLES L. WOODWARD, OF WEST SPRINGFIELD, MASSACHUSETTS, ASSIGNOR lTOUNITED STATES MACHINERY MANUFACTURING COMPANY, OF SPRINGFIELD,MASSACHUSETTS, A CORPORATION 0F MASSACHUSETTS. I

DISHWASI-IING MACHINE.

Application led March 10, 1922. Serial No. 542,674.

'.lhis invention relates to iniprovements in washing machines andparticularly to machines iter-washing dishes iu which a suitableinclosing casing or tank is provided for containing the dishes asknives, forks, spoons, cups, saucers, and plates while being washed. Thelower portion of the dish receiving casing is designed to receive thehot water, and suitable means are provided for driving or forcing thehot water upward into contact with both the inner and outer surfaces ot'the articles to be washed, means are provided for operating a suitablepropeller or other device for causing the water to be thrown upw-ard,suitable means are also provided for preventing the water fromcollecting 1n the lower part of the receptacle so that the water is notchurned around by the propeller without being thrown upward.

An object oi the invention is to provide means for rotating thepropeller by means of a water or other suitable motor which is locatedbelow the base or floor part of the dish receiving casing of themachine.

A further object is to provide a cover the shape of which is such thatthe water is readily deflected downward from the under side thereof andinto contact with the outer surface of the articles being washed.

Further objects and nature oi the invention will appear in the body ofthe specification and be particularly pointed out in the claims.

Referring to the drawings Fig. 1 is a vertical sectional view throughthe anis ot the propeller shattaud enclosing casing showing the interiorconstruction thereof. the rack for supporting the dishes. the waterdeflector plates and the interior construction of the water motor.

Fig. 2 is a view showing the machine connected to the cold water`l'aueet for operating the motor, and i Fig. 3 is a plan viewsubstantially on the line 3&8 ot Fig. l showing the. concentricarrangement o1 the wires for supporting dili'erent articles as plates,tlnnblers, cups, etc.` also the `ipper edgesiof the (lcilector plateswhich supports the dish receiving rack.

Referring to the drawings in detail:

1 designates the inclosing dish receiving easing or tank, which may be'ormed of any suitable sheet metal as copper. This casing is providedwith a removable cover 2 having the inwardly extending flange 8 whichengages the bead el. 5 designates the top plate or casting of the motorinelosing casing on which the bottom plate or portion G of the casing' 1rests. The plate 5 is formed with an integral upwardly extending tubularportion 7 in which is located the vertically arranged shatt 8 of thewater motor, the buckets ot' the wheel of which are indicated at 9.These are of the well known Pelton water wheel type. These buckets areconnected to the hub l() which in turn is pinned to the shaft 8, asindicated at 11. 12 indicates the lower portion of the enclosing casingof the water motor and is formed with an upwardly extending member 13 twhich receives the lower end of the shaft 8.4

The outlet or discharging portion ofthe casing is indicated at 14. Theupper end of the shaft 8 is provided with a suitable propeller blade 15which is for the purpose of scooping and throwing the water upward aswill be described. It is pinned to the shaft 8 as indicated at 16.

It is to he understood that only one propeller blade is to be used andis of such shape or forni that the water is scooped up and thrownforcibly upwardly as indicated by the arrows 17 when the. propeller isrotated. The proper water'level in the casing 1 is indicated at 18. Forthe purpose of preventing the water `trom being churned around in acircle without being properly thrown upward a suitable number ofdeflector plates 19 are employed as shown. These plates aresubstantially right-angle triangles in forni and are secured to theouter and lower edges ot the casing 1. edges Q0 are designed forsupporting the wire rack 21 which receives the dishes. This rack may bereadily removed from the casing 1 when the cover 2 is removed permittingready access to the interior. Located in the center part ol' the rack 21is a woven wire fabric QQ that is rolled into a cylindrical shape forreceiving the knives, forks, and spoons as indicated at 23.

Referent-e to the arrows will indicate the direction ot the water as itis thrown upward at 17, and deflected downward as indicated at Q4,whereby the inner and outer surtaees of the cups 25 and the tumblers 26will be thoroughly washed also the inner and The upper.

outer surfaces of the plates which are indicated at 27. The arrows alsoshow that the water is thrown upward into contact with the knives, forksand spoons inthe wire receptacle 22. For the purpose of operating themotor a hose 28 isy attached to the cold water faucet 20.

It is of course obvious that any other suitable motor may be utilizedfor operating the propeller blade 15 as an electric, or steam motor.

It will be seen from this description that I have provided a simple andeconomical dish washing machine and one that can be readily taken apartand repaired and thoroughly cleaned. The conical or inclined shapedsurface of the cover 2 serves to cause the water which is thrown upwardto be deflected or thrown downward again. The single propeller blade 15is driven by the water motor which is, as shown, attached to the shaft 8between the bearing portions 7 and 13 of the enclosing water motorcasing.

The concentric wires 30 serve to receive the edges of the plates 17.

It is to be understood that the propeller blade 15 is at all times onlypartiall submerged as shown, which has the e ect ofy scooping the waterand throwing it forcibly upward as shown by the arrows 17. This is animportant feature.

lVhat I claim is:

1. In a dish washing machine the combination of a cylindrical casing, apro eller therein, a plurality of trapeziform de ector plates having thebase portions thereof attached to the bottom portion of the casing andhaving the top portions thereof forming supporting surfaces parallel tothe bottom of the'casing, a framework for holding dishes having aportion of its flat bottom surface resting directly upon said supportinsurfaces of said deflectors, the inner si es of said defiectorsextending downwardly and inwardly towards the centre of the bottomportion of the casing and delining with the bottom surface of saidframework a clear space of inverted cone shape in which` said propelleris disposed, said propeller comprising a single shallow blade spacedfrom the bottom of said easing and rotating in a plane parallel to thebottom surface of said framework and lin close proximity to saidframework, a cone shaped cover for said easing acting as a deliector forthe water thrown upwardly by said blade and means for operating saidpropeller.

2. In a dish washing machine the combination of a cylindrical easing, apropeller therein, a plurality of trapeziform deflector plates havingthe base portions thereof attached to the bottom portion of the casingand having the top portions thereof forming supporting surfaces parallelto the bottom of the casing, a framework for holding dishes having aportion of its flat bottom surface resting d1rectly upon said supportingsurfaces of said defleetors and the inner` sides of said deflectorsextending downwardly and inwardly towards the centre of the bottomportion of the casing and defining with the bottom surface of saidframework arclear space of inverted cone shape in which said propelleris disposed.

CHARLES L. WOODWARD.

